1946 mercury kds3

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  • July 20, 2016 at 4:37 pm #4803
    collinh19
    Participant

      How do I remove the prop shaft seal?

      July 20, 2016 at 6:19 pm #40580
      dave-bernard
      Participant

        US Member

        catch the edge and collapse it inward then grab it and pull it out.

        July 20, 2016 at 8:14 pm #40584
        collinh19
        Participant

          Ok thanks having a hard getting the metal part out. Second question I have a lower unit kit that came with the motor I know one of these seals is the prop shaft seal but I dont know what the one on the right is for.

          July 20, 2016 at 8:18 pm #40585
          dave-bernard
          Participant

            US Member

            I would say the green on. but see if it fits the shaft first then the housing.

            July 20, 2016 at 8:30 pm #40587
            collinh19
            Participant

              The green one is the prop shaft seal the other one I don’t know it came in a kit labeled lower unit kit

              July 20, 2016 at 8:44 pm #40588
              dave-bernard
              Participant

                US Member

                most likely the driveshaft seal.

                July 20, 2016 at 9:07 pm #40590
                collinh19
                Participant

                  Do you know where on the driveshaft it goes I assume somewhere on the lower end but I didn’t see one when I put it together

                  July 20, 2016 at 9:24 pm #40591
                  dave-bernard
                  Participant

                    US Member

                    when the lower unit is down there is a seal on the top of the lower where the drive shaft goes in a holder comes out that holds the seal.

                    July 21, 2016 at 1:14 am #40610
                    green-thumbs
                    Participant

                      US MEMBER PAY BY CHECK

                      If I may…the prop shaft seal is a bugger to get out without gouging the recess…repair with
                      JB Weld if need be.
                      The drive shaft seal originally was a piece of raw hide formed into a seal held in place by a
                      spring and a spacer. The spacer also served to align the leg and gear housing. The problem
                      with the raw hide was it absorbed water and held it against drive shaft…most drive shafts
                      are pitted due to corrosion in that area. You can try filling with JB Weld (or something better) and smooth by fine sanding. Duplicating the raw hide seal might work better on
                      a rough shaft than a lip type sea.
                      The lower end of drive shaft was ground to provide a smooth seal and bearing surface and is slightly smaller in diameter than the upper end. If bronze bushing is not worn the upper end of drive shaft will not fit into bushing…if it does fit bushing is worn oversize. Find another
                      gear case as replair of bushing is a toughie to align without a holding fixture to align the
                      two bushings.
                      Louis

                      July 21, 2016 at 2:03 am #40615
                      collinh19
                      Participant

                        Thanks for the info, I was able to get both seals replaces without causing damage, that prop shaft seal was a pain, friend had to get it out new one fits great and snug!

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